Alpern Jonathan D, Lopez-Velez Rogelio, Stauffer William M
Division of Infectious Disease & International Medicine, Department of Internal Medicine, University of Minnesota, Minneapolis, Minnesota, United States of America.
National Referral Unit for Tropical Diseases, Infectious Diseases Department, Ramón y Cajal Hospital University Hospital, Madrid, Spain.
PLoS Negl Trop Dis. 2017 Sep 14;11(9):e0005794. doi: 10.1371/journal.pntd.0005794. eCollection 2017 Sep.
Drugs for neglected tropical diseases (NTD) are being excessively priced in the United States. Benznidazole, the first-line drug for Chagas disease, may become approved by the Food and Drug Administration (FDA) and manufactured by a private company in the US, thus placing it at risk of similar pricing. Chagas disease is an NTD caused by Trypanosoma cruzi; it is endemic to Latin America, infecting 8 million individuals. Human migration has changed the epidemiology causing nonendemic countries to face increased challenges in diagnosing and managing patients with Chagas disease. Only 2 drugs exist with proven efficacy: benznidazole and nifurtimox. Benznidazole has historically faced supply problems and drug shortages, limiting accessibility. In the US, it is currently only available under an investigational new drug (IND) protocol from the CDC and is provided free of charge to patients. However, 2 companies have stated that they intend to submit a New Drug Application (NDA) for FDA approval. Based on recent history of companies acquiring licensing rights for NTD drugs in the US with limited availability, it is likely that benznidazole will become excessively priced by the manufacturer-paradoxically making it less accessible. However, if the companies can be taken at their word, there may be reason for optimism.
美国治疗被忽视热带病(NTD)的药物定价过高。查加斯病的一线药物苯硝唑可能会获得美国食品药品监督管理局(FDA)的批准,并由美国一家私营公司生产,因此存在定价过高的风险。查加斯病是一种由克氏锥虫引起的被忽视热带病;它在拉丁美洲流行,感染了800万人。人口迁移改变了疾病流行情况,导致非流行国家在诊断和管理查加斯病患者方面面临越来越大的挑战。目前只有两种药物被证实有效:苯硝唑和硝呋替莫。苯硝唑历来面临供应问题和药物短缺,限制了其可及性。在美国,目前只有通过疾病控制与预防中心(CDC)的研究性新药(IND)方案才能获得该药,并且是免费提供给患者的。然而,有两家公司表示,他们打算提交新药申请(NDA)以获得FDA批准。根据近期美国公司获取供应有限的被忽视热带病药物许可权的情况来看,苯硝唑很可能会被制造商定价过高——自相矛盾的是,这会使其更难获得。不过,如果这些公司所言属实,或许还有乐观的理由。